Pioneer 4, a NASA/JPL lunar flyby probe launched on Juno II from Cape Canaveral LC-5. First U.S. spacecraft to escape Earth's gravity; it passed about 59,000 km from the Moon, returned radiation data, and entered heliocentric orbit.
- Outcome
- Success
- Orbit
- Lunar flyby
- Payload to orbit
- 7 kg
- Flight
- 2nd
- of 10 Juno II flights
- Date and time
- 3 March 1959, 05:10 UTC
- Rocket
- Juno II
- Builder
- Chrysler
- Launch site
- Launch Complex 5, Cape Canaveral SFS, FL, USA
- Payload
- Lunar Exploration
- International designator
- 1959-013
- Launches in 1959
- 4th of 23
See it in orbit
Space Atlas shows the satellites and rocket stages from this launch in 3D.
View satellites in Space Atlas